While some couples simply shared a kiss at midnight on New Year's Eve, others said "I do." "Big Bang Theory" star Kaley Cuoco and All-American Rejects lead singer Tyson Ritter each had weddings on December 31.

Cuoco married Ryan Sweeting on Tuesday night at the Hummingbird Nest Ranch in Santa Susana, California, People reports. And she didn't walk down the aisle in your standard-issue white dress. Instead, the "Big Bang" star opted for a pink gown by Vera Wang. The couple got engaged back in September.

The actress posted a number of photos from the night on her Instragram, sharing with fans that her wedding was the "greatest night of my entire life."

She wasn't the only one who walked down the aisle. Ritter married "Magic City" actress Elena Satine that same night. The couple had their nuptials in Seaside, Florida, in front of 50 friends and family. The bride wore an off-white gown designed by Inbal Dror. They got engaged back in April.

"We feel very fortunate to have started the New Year this way," they said in a statement to People. "With an abundance of love and happiness together, shared with all of our friends and family."

The night before their big day, Ritter shared his excitement for their wedding on social media. "Rehearsal Dinner done!! @ElleSatine and I have been working our butts off, and now all we have to do is wake up, and get hitched!" he posted Monday night.

Rehearsal Dinner done!! @ElleSatine and I have been working our butts off, and now all we have to do is wake up, and get hitched!

In addition to the two celebrity weddings, one-time MTV star Olivia Palermo got engaged. Her fiancé, German model Johannes Huebl, confirmed the news on Instagram, posting a video of Palermo walking around an exotic locale and then showing off her bling. Her engagement comes a month after her former "The City" co-star, Whitney Port, also got engaged.

"Happy New Year to everybody and this is how we celebrate it: 📢 OP said Y E S," he wrote.